Mr. Cavendish

Mr. Cavendish is a super-picky guest that stays at the Smith home that Roger tries to turn into a bed and breakfast when Stan is laid off in "Big Stan on Campus".

Mr. Cavendish calls in the early morning hours, demanding gourmet food while the family struggles to work through the night to meet his other demands. When he checks out, he leaves them pleased to have met his expectations until Roger realizes that he didn't pay. Steve investigates his room where he stayed and finds he crapped everywhere, while an ambulance picks up Mr. Cavendish outside and straps him into a straitjacket for a trip back to the mental hospital.

Mr. Cavendish is voiced by Stephen Fry.